Normative spectral data on alpha rhythm in male adults

Wieneke, G.H.; Deinema, C.H.A; Spoelstra, P; Leeuwen, W. Storm van; Versteeg, Henri H.

doi:10.1016/0013-4694(80)90404-6

Cited by 40 publications

(18 citation statements)

References 10 publications

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“…Non-genetic studies have indicated a small inverse association between the two alpha measures with higher alpha frequency being associated with less alpha power (Lopes da Silva et al, 1976;Pfurtscheller and Lopes da Silva, 1999;Singer, 1993). The phenotypic correlation of À 0.18 between alpha frequency and alpha power, found in the present study, is of similar magnitude and in the same direction to that indicated previously (Wieneke et al, 1980). Moreover, recently it was shown that IAF and alpha power may capture different component (neural) processes, with these two indices discriminating between mild Alzheimer's disease and vascular dementia (Moretti et al, 2004).…”

Section: Discussionsupporting

confidence: 89%

Genetic variation of individual alpha frequency (IAF) and alpha power in a large adolescent twin sample

Smit

Wright

Hansell

et al. 2006

International Journal of Psychophysiology

133

114

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Section: Discussionsupporting

confidence: 89%

Genetic variation of individual alpha frequency (IAF) and alpha power in a large adolescent twin sample

Smit

Wright

Hansell

et al. 2006

International Journal of Psychophysiology

133

114

View full text Add to dashboard Cite

“…Weineke et al (1980) reported that log pA power, from spectra classically averaged over twenty 5-second epochs, was normally distributed with a skew of À0.385, and kurtosis of 2.5. For classical band distributions of log power, Gasser et al (1982) found 4/24 distributions had significant skew and 3/24 significant kurtosis at p=0.05.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the distributions of classical and adaptively aligned EEG power spectra

Hooper¹

2005

International Journal of Psychophysiology

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“…Based on previous investigations and data from literature a number of parameters, concerning both spectral frequencies, power densities and Hjorth parameters were selected for evaluation (Keskimaki et al 1980;Wieneke et al 1980;Van Huffelen et al 1984;Kennealy et al 1986;Kraaier et al 1988). Because it was unknown whether qEEG changes would adhere to the fixed boundaries of the 'classical' delta, theta, alpha and beta bands subtraction spectra were studied in addition (Kraaier et al 1988).…”

Section: Qeeg Parametersmentioning

confidence: 99%

Changes in quantitative EEG and blood flow velocity due to standardized hyperventilation; a model of transient ischaemia in young human subjects

Kraaier¹,

Huffelen²,

Wieneke³

1988

Electroencephalography and Clinical Neurophysiology

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SununaryA standardized hyperventitation (HV) procedure has been developed in which the end-tidal pCO 2 was decreased to 2 kpa. In 24 young male subjects blood flow velocity and qEEG were studied before, during and after HV. This standardized hyperventilation procedure gave rise to a decrease in blood flow velocity to 40% of baseline value and highly significant qEEG changes in 3 derivations. Both relative and absolute band power estimates showed an increase in slow activity and a decrease in alpha and beta activity. The use of subtraction spectra led to a more precise and detailed presentation of these changes than the use of classical qEEG parameters. These changes were reproducible after 1 week. The effects found in the presented model of HV-induced ischaemia appeared to be twice as large as those found in a model of hypobaric hypoxia. The present model might be used to test the efficacy of anti-ischaemic drugs in young human subjects. Key words: qEEG; Transient ischaemia model; Normal subjectsOf all physical activation methods in use for the provocation of EEG changes, hyperventilation (HV) is perhaps the most commonly used. HV gives rise to a decrease in arterial pCO2, leading to vasoconstriction of the arteriolar channels and as a consequence a decrease in cerebral blood flow (CBF) (Kety and Schmidt 1948;Yamaguchi 1979). Recently a reduction in blood flow velocity (BFV) in the large cerebral vessels has been demonstrated using the transcranial Doppler (TCD) technique (Markwalder et al. 1984). Despite ample administration of oxygen, the HV-induced flow reduction may lead to cerebral tissue hypoxia (Clark et al. 1958;Sugioka and Davis 1960;Kennealy et al. 1980) and to cerebral tissue lactic acidosis (Plum and Posner 1967; Kogure et al.Correspondence to: V. Kraaier, Dept. of Clinical Neurophysiology, University Hospital Utrecht, Utrecht (The Netherlands).1975; Luyten et al. 1987). Thus, HV may be considered as an experimental method of inducing transient ischaemic hypoxia. The fact that similar EEG changes are observed in normal subjects during HV and in patients with cerebral ischaemia gives further support to this conception.Aim of this study was to establish a model of reversible HV-induced ischaemic hypoxia. This was achieved by standardizing the HV procedure by means of capnographic monitoring, which resuited in reproducible changes in BFV and quantitative EEG (qEEG). In this model several qEEG parameters were studied in 3 derivations for both relative and absolute power densities. Furthermore, a comparison was made between spectral changes in this HV model and in the earlier described hypobaric hypoxia model (Kraaier et al. 1988).Since the effect of HV in the EEG decreases with age (Yamaguchi et al. 1979), only young subjects (age 20-25 years) were studied.0013-4649/88/$03.50

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Normative spectral data on alpha rhythm in male adults

Cited by 40 publications

References 10 publications

Genetic variation of individual alpha frequency (IAF) and alpha power in a large adolescent twin sample

Genetic variation of individual alpha frequency (IAF) and alpha power in a large adolescent twin sample

Comparison of the distributions of classical and adaptively aligned EEG power spectra

Changes in quantitative EEG and blood flow velocity due to standardized hyperventilation; a model of transient ischaemia in young human subjects

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